TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

作     者：Jianying Huang Jiali Shen Shuhui Li Jingsheng Cai Shanchi Wang Yao Lu Jihuan He Claire J.Carmalt Ivan P.Parkin Yuekun Lai Jianying Huang;Jiali Shen;Shuhui Li;Jingsheng Cai;Shanchi Wang;Yao Lu;Jihuan He;Claire J.Carmalt;Ivan P.Parkin;Yuekun Lai

作者机构：College of Chemical EngineeringFuzhou UniversityFuzhou350116China National Engineering Laboratory for Modern SilkCollege of Textile and Clothing EngineeringSoochow UniversitySuzhou215123China Materials Chemistry Research CentreDepartment of ChemistryUniversity College LondonLondonUK 

出 版 物：《材料科学技术：英文版》 (Journal of Materials Science & Technology)

年 卷 期：2020年第39卷第4期

页      面：28-38页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070205[理学-凝聚态物理] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Nos.51972063 and 21501127) the 111 Project(No.D17005) the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD). 

主　　题：TiO2 nanotube Au Bi2S3 Photocatalysis Fluorescence sensing 

摘      要：Due to increasingly serious environmental problems,many researchers are investigating green cleanenergy to solve the world’s energy supply issues.So the strategy that Au nanoparticles(Au NPs)and bismuth sulfide(Bi2S3)NPs are used to evenly decorate TiO2 nanotube arrays(TiO2 NTAs)was carried out.Composite materials demonstrated enhanced solar light absorption ability and excellent photoelectrochemical performance.This was attributed to the presence of Bi2S3 NPs with a narrow band gap and the decoration with noble metallic Au NPs which resulted in local surface plasmon resonance(LSPR)effects.The Au/Bi2S3@TiO2 NTAs composites exhibit improved photocatalytic activity for the degradation of methylene blue(MB)under irradiation of UV and visible light.Moreover,the Au/Bi2S3@TiO2 NTAs exhibits high fluorescence emission at 822 nm.Due to the better binding affinity between Bi2S3,TiO2 and Fe3+ions,the synthesized nanocomposites exhibit high selectivity to Fe3+ions.The number of binding sites for Au/Bi2S3@TiO2 NTAs was estimated to be 1.41 according to the double logarithmic regression method.The calculated value ofKwas 1862 M-1.Fluorescence emission intensity decreases with increasing concentration(30μM–5000μM).The detection limit of the synthesized sensor is 0.221μM.